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Re: [patch] ARM gas Floating Point options
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: Nick Clifton <nickc at redhat dot com>
- Cc: Paul Brook <paul at codesourcery dot com>, binutils at sources dot redhat dot com, "Mark Mitchell" <mark at codesourcery dot com>, Richard Earnshaw <rearnsha at arm dot com>
- Date: Tue, 09 Dec 2003 18:04:57 +0000
- Subject: Re: [patch] ARM gas Floating Point options
- Organization: ARM Ltd.
- Reply-to: Richard dot Earnshaw at arm dot com
> Hi Paul,
>
> > The attached patch adds floating point switches to the gas ARM target
> > in line with similar changes to GCC.
> >
> > Basically it adds -msoft-float and -mhard-float which can work
> > independently of -mfpu=. The existing -mfpu=soft* have been kept for
> > compatibility.
>
> Why do you need this facility ? Currently the specs strings
> constructed for gcc translate a -mhard-float or -msoft-float switch
> into the correct hard or soft floating point switches for gas so there
> is no need to support them directly.
>
> There is however a good reason not to support them - they are too
> simplistic. When -msoft-float is specified for example - there is no
> indication what kins of software floating support should be enabled.
> None at all ? soft-VFP ? soft-FPA ?
>
Nick,
Please see this message on the gcc lists for a more detailed discussion.
http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00642.html
R.